Thank you Mr. D. Reiss, You are very kindly for your time and atenttion! I will tray to contact directly then. Regards.

Thank you so much for your comment. I wrote this contribute something interesting how my new line of command: AppendTo[$Path, "/home/.../The_Program"] Now I'm running Mathematica 10.0.1 and using " Ubuntu 12.04.4 LTS " OS. My problem persist. my NamePackage.m don't run. But, in other PC is running this package, using Mathematica 9 or 10. Really I don't know what it is the origin of the problem. I was thinking about the installation of Mathematica was wrong..may be (a bad instalation for example). Then, I take off the different archive from Mathematica: given by: /usr/local/Wolfram/Mathematica/ ; ~/.Mathematica/ ; /usr/share/Mathematica/ ; /usr/local/Wolfram/ (/usr/local/Wolfram/Mathematica/) ; and the archive that found in /usr/local/bin/ It's name are: math mathematica Mathematica MathematicaScript MathKernel mcc wolfram WolframKernel WolframScript .- But, now I'm running "Mathematica" where I have my NamePackage.m and this package don't is up!, Mathematica don't show the letter that should be appear, If it's running ok. I don't know what it is the problem in my machine(may be) or in some tool that Mathematica loss(why not?). Other situation that I did, is, I open my package using Mathematica, but when put Run Package in ON, don't run again! again, I select all and run(using Ctrl+A and then Shift+Enter) and the package is "running" with many errors that don't should show, because I run in OTHER PC that read very well which showed nathing error. Now I feel uneasy for my problem..and I can not find the final and correct answer to my problem. Please I appreciate your time and atention, But what do you think about this?? Regards, PA

fyi, The Community editor interprets underscore characters and dollar sign characters as formatting commands if they are not escaped with a backslash (\) or in backquotes (``). I patched your posts; I hope they get across your meanings better now.

Thank you for your comments Mr. D. Reiss. The form that I'm reading the special package is using the next sentence:

<<NamePackage.m 

My NamePackage.m is located in a folder, it's name is "The_Program". If my Mathematica can not read NamePackage.m like I explained before, I change the "Directory" and I force that Wolfram is working in "The_Program" folder. Now, run the package again, but, I have a problem again, can not read the package correctly!. I appreciate your time and attention.